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Human Genome Project (HGP)… (Class 12 Biology 2023, Q23)

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BiologyCBSE Class 12 · Board exam 2023, set 57/5/1 · 3 marks · Short answer

CBSE Class 12 Biology 2023: question 23

Set in the CBSE Class 12 board exam of 2023, paper 57/5/1, section C, question 23, for 3 marks. Try it first; the hints and our step-by-step solution are below.

Q23 · 3 marks · Short answerBiotechnology and its Applications

Human Genome Project (HGP) was a mega project launched in the year 1990 with some important goals.

  1. (a)

    Enlist any four prime goals of HGP.

    0 marks
  2. (b)

    Name any one common non-human animal model organism which has also been sequenced thereafter.

    0 marks

Source: official question paper from cbse.gov.in (PDF). See it in the full 2023 board paper, set 57/5/1.

Hints

Open one hint at a time and try again before the next.

Hint 1

Think about what had to be found (genes, base sequence) and what had to be done with the data.

Hint 2

Model organisms include a roundworm and the fruit fly.

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. (a) Goal 1: Identify all the approximately 20,000–25,000 genes in human DNA.

    ½ mark

  2. Goal 2: Determine the sequences of the 3 billion chemical base pairs that make up human DNA.

    ½ mark

  3. Goal 3: Store this information in databases.

    ½ mark

  4. Goal 4: Improve tools for data analysis and transfer the related technologies to other sectors, such as industries. Addressing the ethical, legal and social issues (ELSI) arising from the project is also a goal.

    ½ mark

  5. (b) The nematode Caenorhabditis elegans has also been sequenced; Drosophila is another example.

    1 mark

Answer: (a) Identify all 20,000–25,000 genes; sequence 3 billion base pairs; store data in databases; improve data-analysis tools, transfer technology, address ELSI. (b) Caenorhabditis elegans (or Drosophila)

Where the marks are

  • Any four correct HGP goals (½ × 4 = 2 marks)
  • Names a non-human model organism such as C. elegans or Drosophila (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Biotechnology and its Applications, one at a time, marked against the answer key and marking points.Back to the full paper2023 board paper, set 57/5/1: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.